播放中国国产国语纯一级黄片免费看, 大鸡吧快来啊阿啊阿啊黄片在线播放, 中文精品日韩网站在线观看视频免费, 别揉我奶头~嗯~啊~一区二区三区,AV无码播放一级毛片免费古装,亚洲春色一区二区三区,91大神极品,美国一级大黄一片免费下载,午夜爽爽爽男女免费观看软件

化學配方數(shù)據(jù)庫
配方類型: LEATHER
配方說明: Leather Processing (Fatliquoring)
配方組成:
配制方法: Stable emulsions of cod, neatsfoot, and mineral oil are prepared by using "Surfactol" 365 at a level of 10% based on the weight of oil. Such emulsions are stable in the presence of the salts and acids remaining in the leather after prior processing steps. The "Surfactol" 365 promotes the even penetration of these oils into the leather and prevents mottling.

返回數(shù)據(jù)庫查詢
QQ: 2241752642
微信二維碼
電話: 19906633110